Cisco Systems 8600 Series Manual

A SERVICE OF

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10-4 Cisco BPX 8600 Series Reference

BME Operation

BME Operation

Cables are connected between port 1 and port 2 of the backcard, transmit to receive and receive to

transmit.

Note Removing the physical loopback cables or placing line 1 or 2 into loopback will prevent the

cells from the root reaching the leaves.

BME Cell Replication

Figure 10-1 shows a BME with a single root input multicasting with 3 leaves. The root connection

can be added at a BPX switch (BPX switch A) distant from where the traffic is replicated by the BME

card (BPX switch F) and routed through a number of BPX nodes. Similarly, the leaves can be routed

from the multicasting node through a number of nodes before reaching their destination.

Figure 10-1 Replication of a Root Connection into Three Leaves

BPX Switch E BPX Switch G

BPX Switch B

BPX Switch A

BPX Switch C

BPX

Switch F

BPX Switch D

root

leaf 3

leaf 2

leaf 1

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BME